At the same time, the Net is increasingly populated with spiders, worms, agents and other types of automated beasts designed to penetrate the sites and seek out and classify information. All these make wonderful tools for antisocial people who want to invade weak sites and cause damage.
But lets look on the bright side. Given the lack of locks, the Internet is surely the worlds biggest crime-free society. Maybe that is because hackers are fundamentally honest. Or that there currently isnt much to steal. Or because vandalism isnt much fun unless you have a peculiar dislike for someone.
Whatever the reason, lets enjoy it while we can. But expect it all to change, and security to become the number one issue, when the most influential inhabitants of the Net are selling services they want to be paid for.
21. By saying ... owners of well over half of all World Wide Web sites have set up home without fitting locks to their doors , the author means that _____.
A) those happy times appear still to be with us 干扰伎俩: 答非所问+偷换范围
B) there simply wasnt any crime to worry about 照抄原句 直接排除
C) many sites are not well-protected
D) hackers try out tricks on an Internet site without actually breaking in 偏离定位句子,偷梁换柱。
破解思路:答案推理需结合已通读部分和文章主线。
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